Which of the following is NOT true of the North American Free Trade Agreement (NAFTA) as it relates to Mexico?

a. The reduction of trade barriers has led to a more evenly balanced level of trade between Mexico and the United States.
b. Domestic producers worry about competition from U.S. firms.
c. It has meant that the fate of the Mexican economy has become increasingly tied to the American economy.
d. It has led to fears of "cultural imperialism.".
e. Free trade entails a loss of sovereignty for Mexico.

a